Piano wire damper



FIG. 1 is a front, top and left side perspective view of a piano wire damper showing my new design;

FIG. 2 is a front elevational view, the rear being a mirror image thereof;

FIG. 3 is a left side elevational view, the right side being a mirror image thereof;

FIG. 4 is a top plan view; and

FIG. 5 is a bottom plan view. 

The ornamental design for a piano wire damper, substantially as shown and described. 